Mixing-machine.



No. 831,372. PATENTED SEPT. 18,-1906 F. NOTZ & J. MOBRIAR.

MIXING MACHINE.

APPLICATION FILED APR.13.1906.

2 SHEETS-SHEET 1.

No. 831,372. PATENTED SEPT. 18, 1906. F. NOTZ & J. MGBRIAE.

.MIXING MAGHiNE.

APPLICATION FILED APR-13.1906.

2 SHEETS--SHEET 2 weaves.- ,jizverzfozfiea? Q q 4% 5%: L,

UNITED STATES PATENT OFFICE.

FELIX NOTZ AND JAMES McBRLAR, or CHICAGO, ILLINOIS; SAID MGBRIAI.

ASSIGNOR TO SAID NOTZ.

MIXING-MACHINE.

To all whom it may concern:

Be it known that we, FELIX -No'rz and JAMES 'MoBRIAR, citizens of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inMixing-Machines, of which we do declare the following to be a full,clear, and exact description, reference'being had to theaccompanyingdrawings, forming part of this specification.

The present invention, While susceptible of other .uses, is moreparticularly designed to provide an improved machine for the mixing ofdough, from which bread or similar bakery products are to be made.

The ob 'ect of the invention is to provide an improve .machine thatshall serve to thoroughly mix the in redients of the batch of dough,that shall 0 ectively open up and expose the gluten cells of the batch,and that shall impart to the dough a more desirable quality than it hasbeen possible to obtain by any mixing-machines with which we arefamiliar.

To this end the invention consists in the features of noveltyhereinafter described,

illustrated in the accompanying drawings,

and particularly pointed out in the claims at the end of thisspecification.

Figure 1 is a view in front elevation of a machine embodying ourinvention. Fig. 2

is a view in central vertical longitudinal section, parts being shown inelevation. Fig. 3

. is a view in vertical cross-section on line 3 3 of Fig. 1. Fig. 4'is aplan view.

A desi natcs the mixing-chamber of our improved machine, this chamberbeing preferably formed with a curved lower portion and with an opentop, as illustrated more particularly in Fig. 3 of the drawings. Withinthe mixing-chamber A are mounted two mixing-hlades B and C, thepreferred construc tion of these blades being that illustrated in theaccompanying drawings, although the precise construction and arrangementof the mixing-blades may be varied. without departure from the spirit ofthe invention.

Each of the blades B and 0 extends axially of the mixing-chamber A, thepath of revolution of onebf the blades 0 being nearer the axis of themachine than the path of revolu tion of the blade B. As shown, the bladeB comprises the two arms I) and b that are con- Specification of LettersPatent.

Application filed April 13, 1906. Serial No. 311.433.

Patented se t. 18, 1906.

these arms and their connecting-hubs being formed as a single casting.By preferenceeach of the arms I) and b has'a portion of its lengthformed with a part b, adapted to travel in close proximity to the innerwall of the mixin -chamber A, as shown in Figs. 3 and 4, an each ofthese arms I) and b is not only curved in radial direction, as indicatedin Fi 3 of the drawings, but is curved also slightly in such manner thatthe flattened end portion that travels most nearly to the Wall of themixingchamber shall be slightly in advance of the reduced portions of.the blades or arms. tion is that each of the arms I) and b of the bladeB serves to move the batch of dough toward the center of the mixing-chamb er, thus subjecting the batch to a more effective action of themixing-blades and preventing. the I banking of the dough at the ends ofthe mixing-chamber. Preferably that portion of each of the arms I)and 1) adjacent it that tened part b is formedwith an open space 6through which a portion of the dough will pass as "the blade B isrevolved.

- The mixing-blade C preferably comprises the arms 0 and c, that arearranged axially of the plane of revolution of the blade G and areconnected to hubs c and 0 that are formed in piece with the arms 0 andc. The hubs c and c are keyed to the sections d and d of the axlewhereby the blades B and C are driven. The sections d and d of the axlepass through bearing-sleeves E and E, to which are keyed the hubs b andb of the blade B. To the outer end of the sleeve E is keyed a gear-wheelE by which'revolution' will he imparted to the blade B from a pinion E,that is mounted upon the main driveshaft F. The bearing-sleeves E andEpass through. hubs a, that are formed at the ends of the mixing-chamberA, these hubs a being revolubly mounted in suitable bearin s 9, formedat the upper ends of the standar s or supports G. The sleeves E and E,and as well also the hubs a at the ends of the mixingchamber,'areprovided with stuffing-boxes at their outer ends, as shown. Both thesleeves E and E and the hubs (I serve as bearings. The section (1 of theshaft that imparts revolution to the blade C has keyed to its outer 'enda gear-wheel II, that meshes with the pinion H, that is keyed to the endof the nected at their ends by the hubs b and b The result of thisconstrue ,medium of the gear-wheel E drive shaft F. By reference moreparticularly to Fig/2 of the drawings it will be that the pinion H is ofsomewhat greater diameter than the pinion E the result being that a morerapid speed of revolution will be -1mparted to the revoluble bladeC'through machine into and out of operation; but these .from the. arms 5and b form no part of the present invention. Preferably the under sideof the mixing-chamber A is provided with curved rack 'bars a with which.will mesh the inions K, that are carried upon the shaft c,this shaftbeing journaled in bearing-brackets 7t and that project rearwardly fromthe standards G. This shaft 7c has keyed to one of its ends a pinion K,that meshes with a worm-gear fixed. to one end ofa shaft m, that isjournaled in a bracket m, the OPPOSltl' end of this shaft m having keyedthereto a beveled pihion. 971 The pinion m is adapted to mesh witheither one of two beveled pinions n andv a, that are slidably mountedupon the drive-shalt F. The pinions n and n are furnished. with clutchmembers by which either of them may be caused to engage with a slidingclutch member 1, shaft ll". The position of the clutch member P iscontrolled by means of a hand-lever R,

that is pivoted, as shown, to a bracket r, pro-- jecting from one of thestandards G of the machine. It will thus be seen that by grasping thehand-lever R the attendant may throw either one of the beveled pinions nor n into mesh with the beveled gear-wheel (In this way a slow rotarymovement will be communicated. through the worm-gear to the shaft 7c and"from the shaft In andthe-pinions thereon to the rack-bars e thuscausing the receptacle A to be turned 'eitherdownward to discharge itscontents or upward to receive a new batch,

From the foregoing description it will be seen that when revolution isimparted to the drive-shaft F movement will be transmitted therefromthrough the pinion E the gearwheel E, and the sleeve E to the revoluble'blade'B, and at the same time revolution will be imparted to therevoluble blade C through the medium of section cl of its shaft, thegearwheel H, the pinion H, and the drive-shaft F. Inasmuch, however, asthe pinion H is of somewhat greater diameter than the pinion E itfollows that the blade C will be driven at a faster rate of speed thanthe blade B. The result of this will be to cause the blade C to draw orpull the dough away of the blade B, while this latter blade is revolvingat a slower that is mounted upon the speed than the blade C. in practiceit is, found that by thus imparting differential speeds of r volution tothe blades B and C not only is a most thorough mixing of the batchellectod, but the pulling of the dough by the blades B and C thusrevolving at different speeds and in the same direction most effectivelyopens up the gluten cells of the revolution in the same direction tosaid blades whereb r the stirring and pulling of the batch within. thechamber is elfected;

2. A mixing-machine comprising amixingchamber, a plurality ofmixing-blades arranged within said chamber, one of said blades havingarms extending lengthwise thereof and arranged to travel in closeproxiinity to the wall of the mixing-chamber and another of said bladeshaving arms extending lengthwise thereof and arranged to revolve withinthe arms of said first-mentioned blade and means for .im 'iartindifferent s eeds of revolution in the same direction tosaid blades.

3. A. mixing-machine comprising a mixing chamber having a curved vJody,inner and outer coneentricallysevoluble mixing-blades arranged withinsaid body, the outer one of said blades having oppositely-disposed andreversely-curved ams extending ,longitudinally of the mixing-chamber andarran ed to travel in proximity to. the wall. thereof, and

the inner of said blades having arms arranged. to travel within the pathOi'jthe outer mixingblade, and means for impartin' different speeds ofrevolution in the sameirection to the said blades. i

4. A mixinganachine com risinga mixingchamber having a curved od-y,inner and outer c'oncentrically-revoluble mixing-blades arranged withinsaid body, the outer one of said blades having longitudinal arms shapedsubstantially as shown and'ad apted to travel in proximity to the Wallof the mixing-chamber and the inner of said blades having arms arrangedto travel. within the path of the outer mixing-blade, tubular sleevesconnect ed to the outer mixing-blade, shaft-sections passing throughsaid tubular sleeves connected to the inner mixing-blade and gearing forimpartin different speeds of revolution to said mixingd'ibides. i 5. Q irnixing-111ael1inecomprising a mixing: chamber having tubular bearingsat its ends, supports whereon said bearings are revolubly the tubularbearings at the ends of saidtmixmounted, gear mechanism whereby saidmix- 7 connected to the inner end of said shaft-secing-ohember may beturned to discharge its 1 tion; and a driVe-shaitprovided with pinions lcontents, bearin -s1eeves extending through engaging saidgearing-Wheels.-

g FELIX NOTZ.

ving-chember, a gear-wheel connected to the I JAMES MOBRIAR.,

mixing-blade connected to the inner end of section extending throu%h oneofsaid been. 10 ing-sleeves, .& gem-whee GEORGE PJFISHER, J12, KATHARINEGERLAQH. "Witnesses to si nature of J a'mes McBrier': conneotedto saidCARL H. ECKHAM,

outer end of one of said bearing-sleeves, a Witnesses to "signature ofFelix Notz:

said last-mentioned bearing-sleeve, a shaftshaft section at its outerend, a mixing-blade RUPERT HoLLAND.

